Re: [PATCH 4.19 02/74] ARM: dts: rockchip: Make rk3288-veyron-minnie run at hs200

Sasha Levin
2019-08-07T02:26:39Z

On Mon, Aug 05, 2019 at 04:41:12PM +0200, Pavel Machek wrote:
>Hi!
>
>> [ Upstream commit 1c0479023412ab7834f2e98b796eb0d8c627cd62 ]
>>
>> As some point hs200 was failing on rk3288-veyron-minnie. See commit
>> 984926781122 ("ARM: dts: rockchip: temporarily remove emmc hs200 speed
>> from rk3288 minnie"). Although I didn't track down exactly when it
>> started working, it seems to work OK now, so let's turn it back on.
>>
>> To test this, I booted from SD card and then used this script to
>> stress the enumeration process after fixing a memory leak [1]:
>> cd /sys/bus/platform/drivers/dwmmc_rockchip
>> for i in $(seq 1 3000); do
>> echo "========================" $i
>> echo ff0f0000.dwmmc > unbind
>> sleep .5
>> echo ff0f0000.dwmmc > bind
>> while true; do
>> if [ -e /dev/mmcblk2 ]; then
>> break;
>> fi
>> sleep .1
>> done
>> done
>>
>> It worked fine.
>
>This may not be suitable for stable. So... hs200 started working in
>mainline sometime. That does not mean it was fixed in all the various
>stable trees, too.
>
>How was this tested in respective -stable releases?

If you know of any other patches required on older stable kernels to
make this work I'll be more than happy to take them...

--
Thanks,
Sasha